If he joins the cast of the Inhumans I could see him as either Gorgon or Lockjaw!

In Thor, he would make a good Executioner or Absorbing Man.

For Dr. Strange, he works as Baron Mordo - which is what I think the meeting is for.

Maybe Kingpin in DD.

I would strongly disagree here. Diesel's acting chops are not good enough to bring the emotional vulnerability Mordo requires. Also, he does not have the look of an Eastern European. Deisel looks to "Mediterranean" for the role.